Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

can't send group emails

  • 5 cavab
  • 3 have this problem
  • 11 views
  • Last reply by Toad-Hall

more options

when I send serveral emails in one batch it fails and this message comes up: Get a message “An (SMTP) error occurred while sending mail. The server responded: Server busy. Please try again later (#4.3.1).” I can still send single emails wth the same account and server

when I send serveral emails in one batch it fails and this message comes up: Get a message “An (SMTP) error occurred while sending mail. The server responded: Server busy. Please try again later (#4.3.1).” I can still send single emails wth the same account and server

All Replies (5)

more options

Has this ever worked for you?

It would seem that the SMTP server might be configured to work with a somewhat small number of addresses per message; this could be a klunky and lame anti-spammer precaution on the part of your email povider.

An alternative might be to try a mail merge, where you generate one separate message for each addressee, but if your SMTP is getting choked up on multiple addresses per message, firing a lot of messages at it in short order would probably have a similar effect. :-(

https://addons.mozilla.org/en-US/thunderbird/addon/mail-merge/

more options

Zenos said

Has this ever worked for you? It would seem that the SMTP server might be configured to work with a somewhat small number of addresses per message; this could be a klunky and lame anti-spammer precaution on the part of your email povider. An alternative might be to try a mail merge, where you generate one separate message for each addressee, but if your SMTP is getting choked up on multiple addresses per message, firing a lot of messages at it in short order would probably have a similar effect. :-( https://addons.mozilla.org/en-US/thunderbird/addon/mail-merge/

The bulk send-out was working one day before. My server provider checked on their side - its OK, so it is something in Thunderbird

more options

Well, it's a message from a server. That's not to deny that something has changed in Thunderbird to provoke this, but so far you're the first user to have reported this issue.

Just to be clear; is a "batch" just a lot of separate messages in succession, or is it triggered by using a mailing list, or a few messages with large numbers of addressees?

more options

Zenos said

Well, it's a message from a server. That's not to deny that something has changed in Thunderbird to provoke this, but so far you're the first user to have reported this issue. Just to be clear; is a "batch" just a lot of separate messages in succession, or is it triggered by using a mailing list, or a few messages with large numbers of addressees?

Same email with a large number of addresses. Another problem was when adding, say 300, address to the BCC it causes Thundrbird to crash. Perhaps this helps to identify the problem?

more options

re: I send serveral emails in one batch

Are you sending this using a created thunderbird 'Mailing list' or using addon 'Mail Merge' or just selecting several contacts?

Some servers set a limit on the number of emails you can send in a 'batch'. Other servers set a limit in the number of emails you can send in a given amount of time. What is ISP and server?